Robert F. Kennedy was shot just over 45 years ago. And while his death has remained a pivotal point of history, the identity of the doctor who tried to help save his life has been lost. CBS News' Michelle Miller digs into the past and makes a surprising discovery.

Florence Joyner, or "Flo Jo," was born in Los Angeles in 1959. At the 1984 Olympics, she won a silver medal in the 200-meter run. At the 1988 Olympics, she won three gold medals. Joyner died unexpectedly in 1998 but held Olympic world records.

This 2008 Emmy nominated documentary pays tribute to the valor and sacrifice of African-American soldiers while shedding light on the discrimination and disregard that at times proved more threatening than the rigors of battle.

A Civil War-era photograph of slaves owned by General Robert E. Lee is now being preserved and will soon be put on public display at Lee's Arlington House. It was recently discovered, thanks to the keen eye of a local volunteer.

Booker T. Booker was a principal at a local elementary school when the history-making civil rights marches from Selma, Alabama, to the state capitol in Montgomery began. He was also completing his degree at Alabama State University and driving the 50 miles from Selma, Alabama to the school every night, while smuggling in teachers, students, farmers and anyone else who wanted to join the movement.

Malcolm X: “I wouldn’t suggest that they vote for any party or either party. I would suggest that the so-called Negroes become politically mature, realize the power that they hold in the field of politics."

Tonight, I'm joined by Prof. Daina Ramey Berry, Prof. Eric Walther, and Prof. Allyson Hobbs, three scholars of American history, to unpack the causes and consequences -- both immediate and enduring -- of the most deadly war in U.S. history, 150 years after its final battle.

It was Morgan's experience while driving along the streets of Cleveland that led to his invention of a traffic signal device. The first American-made automobiles were introduced to U.S. consumers not long after the turn of the century. It was not uncommon for bicycles, animal-powered wagons and new gasoline-powered motor vehicles to share the same streets and roadways with pedestrians. According to tradition, it was after witnessing a collision between an automobile and a horse-drawn carriage...

As an NAACP field secretary, Medgar Evers became a target for those who opposed racial equality and desegregation. On June 12, 1963 at 12:40 a.m., Evers was shot in the back in the driveway of his home in Jackson, Mississippi.

Fifty years ago Dr. Martin Luther King Jr. won the Nobel Peace Prize. CBS News' Dean Reynolds finds his legacy is strong in Chicago, where a history teacher has been inviting marchers from the past to talk to students of the present.

For Herb Metoyer, the period from 1963 to 1965 is still an open wound. In 1963, during his first tour as a helicopter pilot in Vietnam, he lost several aircrafts and quite a few crew members, which he refers to as his first experience with death.

At the height of the Civil Rights Movement in 1964, the Freedom Summer project drew thousands of volunteers to register black voters and build a new political party. The goals of Freedom leaders were not only ambitious, but revolutionary.